Vehicle brake



Jan. 17, 1928. H

VEHICLE BRAKE Filed May 28. 1926 Paiemed Jani. 17,1928.

UNITED STATES 1,656,189 PATENT OFFICE.

.mN rams, or Btrnarns'r, HUNGARY.

` VEHICLE BRAKE.'

applicati@ mea ymy 2s, 192e. serial No.' 112,343.

This invention relates to an improved construction of brakes and theirmounting more particularly on the rear axle of a motor orother vehicle.V

The main object of the invention is so to construct and mount the brakesand parts associated therewith that their dynamic forces and inconsequence thereof also the,

v when they are much heavier as has been the case with the constructionshitherto emplo ed. g'

he construction according tothe present rinvention has the furtheradvantage that the heat is rapidly radiated and overheating entirelyprevented owing to the walls of the brake shoes being made of thinmetal. A still further advantage consists in the great reduction in thecost of manufacture which is due not only to the smaller price of thematerial as compared with the. material hitherto employed' but also tothe facts that as the vibrations to which the vehicle is subjected are.substantially reduced, the 36 various parts ofthe vehicle, such as themain springs, can be made of smaller dimensions for the same factor ofsafety, and as the heat is so readily radiated no extra rovision has tobe made for cooling the 4o rakes in order to .prevent overheatin It isalso to be pointed out that owmg to the masses of the movable parts beinmuch lighter than the masses of the brakes itherto employed, theeiiiciency of the improved` lbrake is correspondingly increased.

` Referring to the accompanying drawings whiclh illustrate the invent1onby way of exam e y igiir'e 1 is a section acro the brake 5o drum showingthe brake shoes and parts associated therewith yin part sectional elevation.

' Figure 2 is a sectional elevationl of.one .of the brake shoes, 56`Figures 3 ande are transverse sections side strips l, m ofsheet metaland an outer `peripheral strip n also of sheet metal which r strips ofsheet metal 01,02, os which are manner,` to the wheel of the vehicle.

along the lines 33 and 4-4 in Figure 2 respectively, l Figure 5 is aperspective view of a port1o11 of the brake drum` whilst Figure 6 isadetail illustrating a modification of the joint of the cylindrical partof the brake drum.

a is portion of one half of the driving axle b a portionv of the tubularouter casing thereof and c is a wrought iron boss slid on# to thetubular outer casing b. A1 and A, are a pair of 4brake shoes which aremounted on two spindles in such a manner as to surf round at one sidethe cylindrical portion y',

of one spindle and abut at the other sideagainst flat surfaces rovidedon a `cam `portion le, forined on tlie other spindle. The two brakeshoes are held in their normal inoperative position by means of springsd, c and their operation iseffected in the usual way by the rotation ofthe `cam portions k1, f when the twospindles are operated by thebrakelever and pedal. y

Each brake shoe consists of two ilanged is edge welded onto the flanges1 m, of the side strips as shown at l2 and m2 respecf tively. The shoeis reinforced by inner edge welded onto the flanges Z3, fm,3 of the sidestrips as shown for instance at Z4, m,E in connection with the strip o2.The one end of the brake shoe is formed with a-half cylin-v dricalportion p, of sheet metal provided with extensions p2 and welded onto`the four strips l, m, n and o1, whilst the other end thereof isprovided with a sheet metal strip g which is edge welded onto the fourstrips. r and s are further strengthening means of sheet metal providedin the interior of the shoe and welded onto the side strips l, m andouter strip n the said stri s r and a servin to receive the ends of t esprings d, e, or which purpose they are provided with e es 'r1 s1. t isthe usual strip of Fero' do whlch is suitably secured to the strip n.

The brake drum is also made of-'sheet metal and it comprises in additiont6' the cylindrical brake portion u, a discrlilteportion u2 by which itis secured inthe usllllal e two ortions u, and u2 of the brake drum areove-tailed into one another as shown ata., being edge welded all alongthe adjoining ed es of the dove-tail connections. 'lhe cylin ricalportion u1 of the drum is made of a piece of sheet iron having thereuired width and length, its two ends being ove-tailed as shown at u',and a5 and but-twelded all along the edge of the dove-'tail connection.In this way the resistance of the drum to the stresses to which it issubjected is' substantially increased. Further, the portion u, of thedrum is formed with ribs un which may he obtained hy milling. Instead ofone dove-tail, a plurality of such connections may be provided along theconnecting ends of the strip of sheet metal used for the cylindricalportion u1, for instance such as shown in Figure 6.

I wish' it to be understood that the invention is not limited to thedetails hereinbefore given by Way of example as the same may be modifiedin various respects without in any way departing from the spirit of theinvention.

What I claim is: l. A hollow brake shoe iior wheels of strips of sheetiron (Z, m), an outer periph- Y eral strip of sheet iron (n) innerstrengthening strips of sheet iron (0 o2, 03) and end strips of sheetiron (7)1 q), which strips are welded together and forwhich purpose someof the said strips have flanges, as set forth.

3. A hollow brake shoe for wheels of inotor and other vehicles asclaimed in claim 2 having internal strengthening strips of sheet iron(r, s) welded onto the Side strips (Z, m) and to the outer peripheralstrip (n) and having means for engagement with the usual springs ofthebrake shoes, as set forth.

In testimony whereof I have signed my name to this'speciication.

JEN FEJ ES.

